My experience ... NYC ... the kgirls charge more and are a little more demanding. However, if you are visiting the spa places, I would say looks are 75% of the time, incorrect. There is one place I like 'aamp' but hardly has kgirls. They bring in international Asian girls ... who mostly speak fluent English that I enjoy. I stopped paying attention to names when the big crackdown happened since everyone started changing names like underwear. They have locations in midtown west and east. Recently had an Asian cutie from UK - that accent and short-hari, was in heaven!
In DC, I'd say the pictures are about 5-10 years old. Cannot speak for everyone else - but, it seems that if a girl says she is 23, add 10 years. I enjoy the older ones though ... So, my mind automatically ages the photo about 10 years. Remember, most of the photos are heavily airbrushed and PS'd. Even with recent pics ... I would still age the photo about 5 years.
In LA ... it seems 'closer' to the representation than in DC. I've only been approved with 2 agencies in LA ... and I think I was super lucky based on everybody else's difficulties. The girls I visited there ... tended to be closer to the age they stated -- if they advertised 23-25, then, they were around late 20's. Definitely not mid or early 20's; but, late 20's. A few were definitely in their 30's. Their pictures tended to be a bit more accurate than I've seen in DC and definitely when compared to NYC.
Overall, it's not a complete B&S (unlike some places in NYC) ... but, I would tend to age the photo's a bit, expect more wrinkles, less perky breasts, less perky butt, etc.